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No. 624,506. Patented May 9.' |899.

\ H. M. LE Duc.

ANTIFRICTION ROLLER.

(Application led. Dec. 1, 1897.)

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Nirnn STATES ATENTI OFFICE.

HENRY M. LE DUC, OF VVASIIINGTON, DISTRICT OF COLUMBIA.

ANTIFRICTION-ROLLER.

SPECIFICATION forming part of Letters Patent No. 624,506, dated May 9,1899.

l Applicatin filed December 1, 1897. Serial No. 660,383. (No model.)

i citizen of the United States, residing atVVash ington, in the Districtof Columbia, have invented certain new and useful Improvements inAntifriction-Rollers for Cars, Bicycles, and Vehicles; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention has reference to improvements in antifriction-rollers forbearings, in

combination with revolving and stationary shafts, axles, or jou rnalsfor variouspurposes; and it consists of certain novel features ofconstruction, which will be hereinafter fully described in thespecification and pointed out in the claim.

The object of the present invention is to provide cheap, economical,andefcient means for overcoming friction in bearings.

The present invention is so constructed and arranged that all abradingfriction is overcome, as the contacting surfaces of the friction andseparating rolls move in opposite directions by rolling contact. Toovercome end friction of the rolls against their confined casing orshell, a central rib is cast integral with the hub of the revolvingwheel, said rib affording means for a central groove turned in theperiphery of each roll to lie Within the circumference of said rolls,thus holding them free from the Walls of the casing or shell of thewheel. .The grooves in the rolls referred to are of a greater depth thanthe internal projecting rib referred to; otherwise there would be unduefriction between the periphery of the rib and the bottom of the groovesin said rolls, as the'surface speed in both varies in the ratio of theradial distance between the periphery of the rolls and bottom of thegrooves in said rolls.

To more fully elucidate the device, I will proceed to describe thedrawings, in Which- Figure l represents a longitudinal section of myimproved device which is adapted for a bicycle. Fig. 2 represents inside elevation my improved device with the cover removed to exhibit therollers. Fig. 3 represents in detail a portion of the hub-rim'with theinternal rib, which is provided with a gap or openin g for assemblingthe rolls Within a hub or casing.

A indicates a sleeve having the free ends of the same threaded toreceive hubs A A2, said hubs being provided with ordinarywire spokes d2.Passing centrally through said sleeveAis an axle B, which terminates inthe hub A', which will be hereinafter more fully set forth. Said hubs A'and A2 are provided with a chamber C for :receiving friction-rolls D andguide or separating rolls E;

' Within each chamber and integral withthe same is a rib c, which Iitsinto a groove d, formed in each of the rolls D, previously referred to.-The separating-rolls E are also provided with grooves e, which registerwith the groove in each of rolls D., Said separat in g-rolls E areprovided with a pintle or jour nal e on each end and'which travel in ananular grooves in the Walls or sides of the hubs A and A2, respectively.Each hub A and A2 is provided witha cover d. In Fig. 1 lock nuts F areindicated, the inner nut being so constructed as to exclude dust fromthe fric tion-rolls through the medium of felt |dust rings f.

' Shaft or axle B is provided with ribs Z) to prevent end thrust of theaxle, as the fric tion-rolls are held in position by the internal rib cin each hub. Consequently the grooves in said rolls act similar to asolid should er for said ribs b to abut against. The gaps formed in saidribs care provided With plates or plugs G and set-screws g, the latterfor securing them to the hubs A and A2 When the friction rolls areassembled in working position.

An axle having ribs thereon, grooved friction-rolls adapted to be guidedby said ribs, hubs having projecting ribs therein and also for guidingsaid friction-rolls, there being a gap in said ribs for assembling saidfrictionrolls, in combination with a plug for closing said gap when saidfriction-rolls are assembled, and the means for securing said plug,lsubstantially as described.

In testimony whereof I aflix my signature in presence of two Witnesses.

HENRY M. LE DUC.

Witnesses:

W. BEES EDELEN, THos. E. RoAoH.

